Index 



PAGE 



Orchids, delicacy of 35 



seed-pods of 128 



Orchis, Great green (H. orbicuhita) 141 



morio 7 



nectar, how concealed 8 



reason for peculiar concealment of nectar 27 



Tubercled, or Small pale green (H. flava) 139 



Oxalis (Wood-sorrel) 66 



P 



Pedicularia Canadensis (Wood-betony) 85 



Pickerel weed. Blue (P. cordata) 66 



Pistil, parts of 3 



lessons 25 



Pogonia, Sweet or Grass-pink (P. ophioglossoides) 155 



Pollen, functions of 4 



Pollination, see Fertilization. 



Poly gala, its cleistogamous buds 16 



Pontidera, his theory regarding honey 6 



Pontidera cordata (Blue pickerel weed) 66 



Primrose, see Evening primrose. 



Progress Nature's law 33 



Pulse family. The 43 



Purple-fringed orchid (H. psycodes) 135 



Purple loosestrife (L. salicaria) 66 



Q 



Quaker-ladies (H. caerulea) o . . . - 61 



R 



Rattlesnake-plantain, The (Goodyera) 145 



Rudbeckia hirta (Brown-eyed Susan) 67 



s 



Sage, The (S. officinalis) 91 



Scrophularia (Figwort) 79 



" Secrets of Nature in Forms and Fertilization Discovered. The," 6 



Self-fertilization, conditions preventing S-10-12 



Sham nectar-producers, note 7 



176 



